Quiznetik

Structural Design and Drawing | Set 1

1. Originally, Rankine’s theory of lateral earth pressure can be applied to only

Correct : A. cohesion less soil

2. Rankine’s theory of lateral pressure was extended to other soil by

Correct : A. resal and bell

3. Based on the assumptions of Rankine’s theory, the soil mass is

Correct : C. homogeneous

4. Which of the following cases for cohesion less backfill in Rankine’s theory is considered?

Correct : D. all of the mentioned

5. The factor that is responsible for inclination of resultant pressure to the retaining wall is

Correct : A. frictional force

6. If the sand filled behind the retaining wall with saturated water with water, then the possible lateral pressure is

Correct : A. lateral pressure due to submerged weight and lateral pressure due to water

7. The earth pressure at rest exerted on a retaining structure can be calculated using

Correct : B. theory of elasticity

8. The expression for K0 as given by Jacky is

Correct : A. k0 = 1 – sin φ

9. What will be the coefficient of earth pressure at rest for a rigid retaining wall, If the backfill consists of cohesion less soil having φ = 26°?

Correct : C. 0.5616

10. A force 2P is acting on the double transverse fillet weld. Leg of weld is h and length l. Determine the shear stress in a plane inclined at θ with horizontal.

Correct : A. psinθ(sinθ+cosθ)/hl

11. Maximum shear stress in transverse fillet weld of leg h and length l is

Correct : B. 1.21p/hl

12. Hollow saddle key is superior to flat saddle key as far as power transmitting capability is concerned.

Correct : B. false

13. Saddle key is more suitable than sunk key for heavy duty applications.

Correct : B. false

14. The main advantage of sunk key is that it is a            drive.

Correct : A. positive

15. Woodruff key permits            movement b/w shaft and the hub.

Correct : B. radial

16. Determine the length of kennedy key required to transmit 1200N-m and allowable shear in the key is 40N/mm². The diameter of shaft and width of key can be taken as 40mm and 10mm respectively.

Correct : D. 53mm

17. Splines are keys.

Correct : A. true

18. The prestressed concrete slab systems are ideally suited for

Correct : B. slabs

19. The precast prestressed hollow core slabs, with or without topping is an important

Correct : A. floor panels

20. One way slabs may be supported across the entire width of the slab by means of

Correct : B. piers

21. The simple or continuous slabs are analyzed for

Correct : C. design moments

22. The design of a two-way-slab supported on all four sides involves the computation of

Correct : C. bending moment

23. A simple prestressed flat slab is generally supported by a network of

Correct : B. columns

24. The proportioning of tendons in design of prestressed concrete simple flat slab between the column and middle strips may be based on

Correct : B. codes

25. The design principles of continuous flat slab floors are similar to

Correct : B. two way slab

26. What will be the design load for bridges and culverts on National Highway?

Correct : C. i.r.c. class-a loading

27. Hard, rough and durable granite stone ballast                    gauge, shall be used.

Correct : D. 60mm

28. These are important roads within a district connecting areas of production with markets and connecting them with the State Highways & National Highways and are maintained by the State PWD?

Correct : C. district road

29. What will be the maximum superrelevation in hills on Major District roads?

Correct : B. 1 in 10

30. What will be the ruling gradient in hills on “Other district roads”?

Correct : C. 1 in 10

31. What will be the minimum visibility at vertical curves on National Highway?

Correct : D. 100 m

32. What will be the width of metalled surface single lane on Major District road?

Correct : B. 3.70 m

33. Subgrade shall be well consolidated and compacted each with a camber of 1 in 60.

Correct : A. true

34. 8 cm.

Correct : B. false

35. First coat of bituminous painting shall be with stone ballast no.3 and stone grit of 20 mm gauge at 220 kg of asphalt and 1.35 cu m of stone grit per 100 sq. m.

Correct : B. false

36. If subgrade is soft or weak, a thick sub- base of cheap and inferior materials well compacted should be used.

Correct : B. true

37. Laying and consolidation shall be done during dry season.

Correct : B. false

38. Stone grits used for 1st coat and 2nd surface painting may be precoated in advance with advance with bitumen.

Correct : A. true

39. As soon as sufficient length of premix has been laid, rolling should be started with 2 to 4 tonne roller.

Correct : B. false

40. Which authority is responsible for national highway?

Correct : D. ministry of road transport and highways

41. A structure that allows water to flow under a road, railroad, trail, or similar obstruction from one side to the other side is called as

Correct : D. culverts

42. A structure that carries water above land is known as an

Correct : A. aqueduct

43. If the span of crossing is greater than 12 feet (3.7 m), the structure is termed as bridge and otherwise is culvert.

Correct : A. true

44. Culverts cannot be constructed of a variety of materials including cast-in-place or precast concrete.

Correct : B. false

45. Construction or installation at a culvert site generally results in disturbance of the site soil.

Correct : A. true

46. Box culverts can be defined as a passage for water over a natural ground having a deck slab over it as path way for vehicles.

Correct : B. false

47. An                    culvert is normally a low profile culvert. It allows them to be installed without disturbing the causeway as it will span over the entire drainage width.

Correct : C. arch

48. Prestressed concrete although it is water tight, it is not

Correct : A. gas tight

49. In the case of large tanks, the base slabs is subdivided by

Correct : B. joints

50. The nominal reinforcement provided for floor slabs stipulated by Indian standard code is not less than?

Correct : C. 0.15

51. When a sliding joint is made what is interposed at the junction of wall and base?

Correct : A. rubber

52. In the fixed base joint the junction is between the tank wall and

Correct : B. footing

53. Calculate circumferential prestress of a cylindrical prestressed concrete water tank given that the thickness is 12mm, loss ratio is 0.75, the maximum stress under working pressure is 1n/mm2(Nd value is 720)?

Correct : A. 9.4n/mm2

54. wires of 8mm diameter stressed to 1200n/mm2 are to be used for vertical prestressing?

Correct : B. 12

55. Calculate the spacing of 5mm wires having a loss ratio of 0.075, compressive stress is 10.75n/mm2, 5mm diameter wires stress is 1000n/mm2, 12 wires of 8mm diameter are stressed to 1200n/mm2(Nd = 840n/mm2)?

Correct : B. 11.6mm

56. Calculate the maximum vertical moment due to prestress if given self weight moment is 16.5kn/m, thickness is 0.115m and loss ratio is 0.0075?

Correct : C. 25.4

57. Find vertical prestressing force if characteristic strength is 8.2, wires are stressed at 1000n/mm2, diameter is 150mm?

Correct : B. 1230kn

58. Prestressed concrete tanks have been widely used for the storage of

Correct : C. fluids

59. The metal linear concept in prestressed tanks has proved to be success in case of

Correct : B. water tanks

60. Calculate minimum wall thickness given a cylindrical prestressed water tank of internal diameter 30m over a depth of 7.5m and the permissible compressive stress at transfer is 13n/mm2 and the maximum compressive stress under working pressure is 1n/mm2 and the loss ratio is 0.75?

Correct : B. 82.3

61. Calculate vertical prestressing force if wires of 5mm diameter with an initial stress of 1000n/mm2 are available for circumferential winding and Freyssinet cables made up of 12 wires of 8mm diameter stressed to 1200n/mm2 are to be used for vertical prestressing?

Correct : B. 12

62. What is beam?

Correct : A. structural member subjected to transverse loads

63. Structural members subjected to bending and large axial compressive loads are known as

Correct : C. beam-column

64. Members used to carry wall loads over wall openings are called

Correct : D. lintels

65. Load transfer by a beam is primarily by

Correct : C. bending and shear

66. What are spandrels?

Correct : A. exterior beams at floor level of buildings

67. Members used in bridges parallel to traffic are called

Correct : B. stringers

68. Which of the following statement is correct?

Correct : C. beams are termed as fixed beams when ends are rigidly connected to other members

69. Complex stresses may occur when

Correct : A. loads are inclined to principal axes

70. Simple bending takes place if

Correct : C. loading plane coincides with one of the principal planes of doubly symmetric section

71. Which of the following buckling does not occur in beam?

Correct : B. local buckling of web

72. The diameter of longitudinal bars of a column should never be less than?

Correct : A. 12 mm

73. The number of treads in a flight is equal to

Correct : C. risers minus one

74. A foundation rests on

Correct : D. foundation soil and subgrade

75. For initial estimate for a beam design, the width is assumed?

Correct : B. 1/30th of span

76. High strength concrete is used in prestressed member?

Correct : D. to overcome bursting stresses, provide high bond stresses and overcome cracks

77. The advantage of reinforced concrete is due to

Correct : D. monolithic character, moulding any shape and fire-resisting

78. Cracking of the concrete section is nearly impossible to prevent.

Correct : A. true

79. The architect is usually the lead designer on buildings, with a structural engineer employed as a sub-consultant.

Correct : B. true

80. Why plate girder is preferred over truss girder?

Correct : D. cost of fabrication of truss girder is high

81. Bending resistance of plate girders can be increased by

Correct : B. increasing distance between flanges

82. Which of the following is economical if depth is limited and loads are too large?

Correct : C. welded box plate girder

83. An ideal bolted plate girder section consists of

Correct : B. flange angles and cover plates for compression flange and only flange angle for tension flange

84. The modes of failure of plate girder are

Correct : C. by yielding of tension flange and buckling of compression flange

85. At high shear locations in the girder web, principal plane will be              to longitudinal axis of member

Correct : A. inclined

86. Which of the following causes web buckling in plate girder?

Correct : B. diagonal compression

87. Which of the following statement is correct for reducing web buckling due to diagonal compression?

Correct : D. reducing depth-to-thickness ratio

88. Which of the following is correct during tension field action?

Correct : B. horizontal component of diagonal compression is supported by flanges

89. Which of the statement is not true about intermediate stiffeners?

Correct : A. they reduce shear capacity of web

90. Which of the following is correct regarding gantry girders?

Correct : B. it is subjected to impact load

91. Which of the following loads are not considered in the design of gantry girders?

Correct : D. wind loads

92. The wheel load transferred from trolley to gantry girder is given by

Correct : C. w1 = [wt(lc-l1)]/(2lc)

93. The maximum wheel load is obtained when

Correct : B. crane crab is closest to gantry girder

94. The bending moment due to dead load of girder is maximum at

Correct : D. centre of span

95. The minimum recommended rise of trusses with Galvanised Iron sheets is

Correct : B. 1 in 6

96. The economic spacing of roof truss depends on

Correct : B. cost of purlins and cost of roof covering

97. Which of the following is true for economic spacing?

Correct : D. cost of trusses should be equal to twice the cost of purlins plus cost of roof coverings

98. Which of the following load combination is not considered for design of roof trusses?

Correct : C. dead load + earthquake load

99. Live load for roof truss should not be less than

Correct : A. 0.4kn/m2

100. Simple connections are used to transmit

Correct : A. forces